{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Anatomy"], "input": "Retinoids exert their physiological activities through retinoid receptor nuclear proteins that belong to the superfamily of steroid / thyroid hormone receptors , of which there are two classes , retinoic acid receptors ( RARs ) and the retinoic - X receptors ( RXRs ) , each of which has three subtypes , alpha , beta , and gamma [ 23 ] , [ 24 ] ."}
{"Anatomy": ["nuclear"]}